ISO: DICTATION APP - HELP!

Dying for an app that will transcribe me talking into text. This must exist. Right? Like better than Siri, which I use in a pinch. Help!
  1. FYI I basically want it so I can record stuff I think while driving - reminders, etc. I'm just trying to be a good citizen and not text and drive, people!
  2. Dragon Dictate
    Suggested by   @ChrisK